1. An Overvew of Centrifugal Fan 

(1)Description

Backward curved centrifugal fans are used primarily for intake suction and do not require a scroll housing. They have high hydraulic efficiency. They usually offer a quiet and compact air moving solution. The Permanent Split Capacitor motors provide reduced operating costs and longer service life. Ball bearing construction allows multiple mounting options. Backward centrifugal fans have low profiles that do not need scroll housing. Air is discharged 360° radially from the impeller wheel. These units operate very efficiently at high pressures.

(2)Product Features

1. Material: Impeller: sheet aluminum

Rotor: coated in black

2. Bearings: Maintenance-free Ball Bearings

3. Direction of rotation: Clockwise rotation viewing rotor

4. Approval: All models have reached UL approval, CE approval and CCC approval

5. Motor protection: All models are fitted with an internal Thermal Overload Protection Device.

(3)Typical applications

Exhausting industrial processes, roof and building ventilation, cleanroom and other sensitive HEPA filtering application, laboratory and research facility ventilation, air conditioner, heat exchangers, in-line duct blowers, range hood, fire place inserts, humidifiers, dehumidifiers, hand dryer.

2. Brief Introduction of Backward Centrifugal fan 

—Material: Impeller: sheet aluminum

Rotor: Coated in black

—Number of blades: 6

—Direction of rotation: Clockwise, seen on rotor

—Type of protection: IP54 or IP44

—Insulation class: B or F

—Mounting position: Shaft horizontal or rotor on bottom; rotor on top on request(Any)

—Condensate discharges: Rotor-side

—Mode of operation: Continuous operation (S1)

—Bearings: Maintenance- free ball bearings

—Motor protection: Design with thermal overload protector

—Cable exit: variable

—Product conforming to standard: CE

—Approval: UL, CCC

3. performance parameters

 4. shape and the size of installation

 FENGDA was established in 1990,covering an area of 17,000 square meters,more than 200 employs.

We professionally  manufacture various fans and motors,which widely used in ventilation,air condition,cooling

and heating industry.

     We have strong technology,specialized production facilities and advanced inspection instruments,relying on professionally R &D team,high efficiency production lines and scientific  management ."Low noise,high airflow volume,stable running and long lifetime" to be our strongpoint. By national detection,the technical values of noise, volume, temperature rising balance,lifetime are better than other factories.

    Over the years,we have been insisting on the principle "being the leader enterprise ,being the best quality,being 

the greast contribution",which establish the famous brand of  "Fengda".We have gotten CE certificates and ISO9001

Quality Management System Certification.And our products are exporting to Europe and America,Middle East,Russia etc.

     Single packing in one carton

1.Warranty:1 year  warranty  for  all  products.

2.Products Quality:100% products  inspection  before  delivery.

3.Just in time  delivery: Normally,lead  time is  30  days.

4.Customized  Service: As we have our  own  molding  department,customized  service  can be  provided.

5.Prompt  customers  services:E-mail  will be  replied  in 24  hours.

1. Q: What information do you need to  provide in order to get a question?

   A: Generally,information about size,Air Flow,Voltage of required fans  is needed in order to

       select a right fan for you and provide you a quation.

 2. Q: Can I have samples  for  testing before  ordering  products?

   A: Yes,we sincerely suggest that customers should be have samples  of required fans for testing because          the truly performace of fans can be fully  demonstrated after testing is conducted.

 3. Q:Can I have a discount  for the  quoted price?

   A: The quoted  price  is  based  on  annual usage quantity.If annual usage quantities increase,please              provide the information to  our sales.We will provide you  a furth  discount.

4. Q:What is the warranty  of products?

   A: All of our products have 1 year warranty.Every product has its own production code.This code is

   able to track the  productiuon time.